It is made of high hardness tungsten steel, which is wear-resistant and high temperature resistant, suitable for high-speed finish machining, with long service life, and can stably maintain IT6 grade high precision. Multi-flute spiral design reduces vibration, straight groove/helical groove optional, suitable for steel, stainless steel and other materials, realizing Ra0.4 high finish. Widely used in automotive engine holes, aerospace precision parts and other difficult-to-machine materials, CNC high-efficiency production, improve machining efficiency by more than 3 times., Manufacturer: LOPAKACTAG